KEEP: test case of a PlantUML code block

[exKAZUu]

Here is a sample code block which has the language identifier puml.

@startuml
class A {
    -int privateField
    +String publicField
    -void privateMethod()
    +int publicMethod()
}

class B {
}

class C {
}

A <|-- B
B --> C
@enduml

[exKAZUu]

Here is another sample code block which DON'T have the language identifier puml.

@startuml
class A {
    -int privateField
    +String publicField
    -void privateMethod()
    +int publicMethod()
}

class B {
}

class C {
}

A <|-- B
B --> C
@enduml